Captains of Industry Like Steel Magnate Andrew Carnegie and Oil

Captains of industry like steel magnate Andrew Carnegie and oil man John D.Rockefeller:

A) began creating or consolidating their fortunes during the Civil War.
B) benefited after the war from the respect their military service earned for them.
C) became important advisers to President Lincoln.
D) voluntarily provided important resources to the war effort.
E) made millions bilking southerners who were buying war bonds.